EP 3856105 A1 20210804 - METHOD FOR THE PRODUCTION OF SUPERABSORBENTS
Title (en)
METHOD FOR THE PRODUCTION OF SUPERABSORBENTS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON SUPERABSORBERN
Title (fr)
PROCÉDÉ DE PRODUCTION DE SUPERABSORBANTS
Publication
Application
Priority
- EP 18197563 A 20180928
- EP 2019074782 W 20190917
Abstract (en)
[origin: WO2020064411A1] The invention relates to a method for producing superabsorbent particles via polymerisation of a monomer solution or suspension, comprising the steps of drying the obtained aqueous polymer gel in a circulating-air belt dryer, grinding, classification, and optionally thermal surface post-cross-linking, wherein the aqueous polymer gel is introduced into the circulating-air belt dryer by means of an oscillating conveyor belt, adhering polymer gel is cleaned off the underside of the returning conveyor belt by means of at least one wiper device, and the underside of the returning conveyor belt is sprayed with water.
IPC 8 full level
A61F 13/15 (2006.01); A61L 15/60 (2006.01); B08B 1/00 (2006.01); B08B 1/02 (2006.01); B08B 3/02 (2006.01); B08B 3/04 (2006.01); B08B 9/08 (2006.01); B65G 45/24 (2006.01); C08F 220/06 (2006.01); C08J 3/12 (2006.01); F26B 17/02 (2006.01); F26B 17/04 (2006.01)
CPC (source: EP KR US)
A61F 13/53 (2013.01 - KR); A61L 15/24 (2013.01 - KR); A61L 15/60 (2013.01 - EP KR US); B01J 20/261 (2013.01 - US); B08B 1/165 (2024.01 - US); B08B 1/20 (2024.01 - EP KR US); B08B 3/022 (2013.01 - EP KR); B08B 5/023 (2013.01 - EP KR); B29C 35/0277 (2013.01 - KR); C08F 6/00 (2013.01 - KR); C08F 220/06 (2013.01 - EP KR US); C08F 222/102 (2020.02 - KR); C08J 3/245 (2013.01 - EP KR US); F26B 17/023 (2013.01 - EP KR); F26B 17/04 (2013.01 - EP KR); A61F 2013/530591 (2013.01 - KR); B01J 2220/68 (2013.01 - US); B08B 1/165 (2024.01 - EP); C08F 6/008 (2013.01 - US); C08J 2333/02 (2013.01 - EP KR)
C-Set (source: EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020064411 A1 20200402; CN 112804976 A 20210514; EP 3856105 A1 20210804; JP 2022502543 A 20220111; KR 20210073516 A 20210618; US 2021338882 A1 20211104
DOCDB simple family (application)
EP 2019074782 W 20190917; CN 201980062010 A 20190917; EP 19766267 A 20190917; JP 2021517231 A 20190917; KR 20217008450 A 20190917; US 201917272364 A 20190917